Fuel tank bowl connection



Dec. 5, 1950 BERGER 2,532,595

FUEL TANK BOWL CONNECTION Filed Dec. 22, 1945 mmvrozz. AABEBTH. BERGER,

BY W W ATTOB/VEYS'.

Patented Dec. 5, 1950 FUEL TANK BOWL CONNECTION Albert H. Berger, RockyRiver, Ohio, assignor, by

mesne assignments, to The Consolidated Iron- Steel ManufacturingCompany,

Cleveland,

Ohio, a corporation of Ohio Application December 22, 1945, Serial No.636,625

3 Claims.

The invention relates to oil stoves, and more particularly to novel andimproved liquid fuel supply means, including in combination a, fuelsupply and level maintaining bowl, a fuel supply pipe, and novel andimproved connecting means between said bowl and said pipe.

An object of the invention is to provide a novel fuel retaining andsupply device of the character indicated, of simple yet sturdy andleak-proof construction, which can be fabricated cheaply and easily, andassembled readily and rapidly, all parts being formed from widelyavailable materials. Other objects and advantages will be apparent froma study of the following description in conjunction with the attacheddrawings in which:

Fig. 1 is a view in front elevation of a fragmentary portion of an oilstove embodying my invention;

Fig. 2 is a fragmentary top plan view of a portion of the bottom of afuel supply bowl, taken on the line 2-2 of Fig. 1;

Fig. 3 is a sectional view taken on the line 33 of Fig. 2;

Fig. 4 is a sectional view taken on the line 4-4 of Fig. 3;

Fig. 5 is a perspective View of a thimble connector constituting one ofthe elements of this invention;

Fig. 6 is a view somewhat similar to Fig. 3 but showing a slightlymodified form of the connection between the thimble and the supply pipe.

Before the present invention here illustrated is described in detail, itis to be understood that the invention here involved is not limited tothe details of construction or the specific arrangement of parts hereinillustrated or described, as the invention obviously may take variousforms. It also is to be understood that the phraseology or terminologyherein employed is for the purpose of description and not of limitation,the scope of the present invention being defined in the ap- I pendedclaims.

Speakin first generally, and with occasional reference to Fig. 1, I showa fragmentary portion of a stove Ill designed for liquid fuelconsumption, such fuel being hereinafter identified by the term oil. Thestove may rest on any suitable support (not shown). The stove has asheet metal frame including a top portion I 2, a bottom portion I3, andan end portion I4. Oil is supplied from an inverted container I5 to anoil level bowl I6, by a valving arrangement involving a liquid levelseal of known construction. It will be understood by those familiar withstoves of this type that the oil level in bowl I6 is automaticallymaintained at or near the line L.

The stove likewise comprises one or more burners I8, one being shown,said burners being in liquid communication with bowl l6 through the oilsupply pipe I9, and through connector devices 20 and 2I. When the burneris in operation, the oil risesto the same level in the burner I8 as inbowl I6. The present invention is specifically directed to thestructural relationship of bowl I6, fuel pipe I9 and the intermediateconnector 2!.

Connector 2I is a drawn metal member, here termed. for convenience athimble, having a generally cylindrical body portion and a closed end22. This thimble body is sleeved or telescoped over the end of supplypipe I9 and may be secured thereto in any of several ways, a threadedconnection being shown in Fig. 3. A wall portion of the thimble isflattened, at 23, for convenient seating against the outer face of thebottom wall 24 of bowl I6. I prefer to spot weld the thimble to the bowlbottom, after which a peripheral brazed connection is established aroundthe line of contact of the edge of flat zone 23 with the bowl bottom asindicated at 26 in Fig. 4 and Fig. 3.

Liquid communication between bowl I6 and pipe I9 is established bypiercing the bowl bottom and the thimble wall as at 21 in Fig. 3. Itwill be understood that the oil flows by gravity from bowl I6 towardsburner I8, but such fiow is controlled or terminated by manipulation ofa valve knob 28 which operates a valve housed in connector 20, and nothere specifically shown or described.

In prior constructions of this nature, the connecting and fueltransmitting means are either much more elaborate and expensive, or arenot sturdy and dependable. Such prior connecting means are eitherexpensive and cumbersome, or are neither leak-proof nor otherwisereliable. Connecting surfaces, in the past, were often soldered and wereliable to separate under temperature fluctuations, so as to give rise tofire hazards through possible ignition of the leaking oil.

The present construction is not only safely leakproof, but it supportsthe bowl I6 and fuel container I5. The pipe I9 is secured to the bottomplate of the stove by one or more straps 30.

Fig. 6 shows a slightly modified form of thimble connection, in whichthe tubular thimble 2Ia is sleeved or telescoped with a sliding orforced fit over the pipe I9a, and the permanent connection is maintainedby a brazing operation in an annular zone around the open end edge ofthe thimble, as indicated at 32.

What I claim is:

1. In an oil stove of the character described wherein said stove isprovided with a fuel supply bowl having an exteriorly flat bottom and afuel supply pipe in fuel fiow communication therewith through thebottom, novel connection means for uniting said pipe and said bowlbottom comprising a drawn metal connector of generally thimble formhaving a hollow body portion sleeved over and permanently secured to thepipe end, the side wall of the body portion having an external flatsurface fitting and seated against the flat bottom of the bowl, saidconnector being spot welded to the bowl at one point, and brazed theretoover the entire area of the said flat surface, said connector and saidbowl bottom being provided with aligned openings to permit liquidcommunication between said pipe and said bowli 2. In an oil stove of thecharacter described wherein said stove is provided with a fuel supplybowl having an exteriorly flat bottom and a fuel supply pipe in fuelflow communication therewith through the bottom, novel connection meansfor uniting said pipe and said bowl bottom comprising a drawn metalconnector of generally thimble form having a hollow body portion sleevedover and permanently secured to the pipe end, the side Wall of the bodyportion having an external flat surface fitting and seated against theflat bottom of the bowl, said connector being spot welded to the bowl atone point, and brazed thereto over the entire area of the said flatsurface, said connector and said bowl bottom being provided with alignedopenings to permit liquid communication'between said pipe and said bowl,there being a brazed connection between said pipe end and said connectorsurrounding the external terminus of their zone of mutual contact.

3. In an oil stove of the'character described wherein said stove isprovided with a fuel supply bowl having an exteriorly fiat bottom and afuel supply pipe in fuel flow communication therewith through thebottom, novel connection means for unitin said pipe and said bowl bottomcomprising a drawn metal connector of generally thimble form having ahollow body portion sleeved over and permanently secured to the pipeend, the side wall of the body portion having an external flat surfacefitting and seated against the flat bottom of the bowl, said connectorand said bowl bottom being provided with aligned openings to permitliquid communication between said pipe and said bowl.

ALBERT H. BERGER.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 189,655 Rigby Apr. 17, 18771,840,764 Brown Jan. 12, 1932 2,005,066 Abadjiefi June 18, 19352,319,739 Kessler May 18, 1943 2,338,090 Bradfield Jan. 4, 1944

